Your not a chef on America's Test Kitchen! You don't need these. They might seem handy, but it just makes more work. First, you have to pre-measure all your ingredients, and then you have to wash so many more dishes after. Not to mention, if your going toput each ingredient in it's own bowl, you will have to spend a lot of money buying them, because you can't cook that many things with four ingredients. Sure, if you have a cooking show, it will save time on the air, but otherwise, your wasting your money.